Load Specifications
Load data in caliber .308 Win. Ackley Improved with .308 | 180gr | Barnes X BT bullet and 82 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 52, Alliant Power Pro 2000-MR and Hodgdon CFE223.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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You can find more information in our FAQ: How can I use the Personalized Load Calculator?
Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 90% | 54,099 psi | 90% | 2464 fps | 100% |
| Accurate 2200 | <<locked>> | 82% | 53,983 psi | 90% | 2536 fps | 98.4% |
| Accurate 2460 | <<locked>> | 86% | 52,562 psi | 87% | 2484 fps | 100% |
| Accurate 2495 | <<locked>> | 94% | 51,416 psi | 85% | 2480 fps | 100% |
| Accurate 2520 | <<locked>> | 90% | 53,316 psi | 89% | 2533 fps | 100% |
| Accurate 4064 | <<locked>> | 98% | 53,940 psi | 90% | 2552 fps | 100% |
| Accurate LT-30 | <<locked>> | 84% | 53,722 psi | 89% | 2408 fps | 100% |
| Accurate LT-32 | <<locked>> | 84% | 54,114 psi | 90% | 2425 fps | 100% |
| ADI AR 2206H | <<locked>> | 92% | 52,663 psi | 87% | 2533 fps | 98.9% |
| ADI AR 2208 | <<locked>> | 98% | 52,881 psi | 88% | 2520 fps | 98.3% |
| ADI AR 2219 | <<locked>> | 84% | 53,954 psi | 90% | 2520 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 90% | 51,924 psi | 86% | 2493 fps | 99.5% |
| Alliant AR-Comp | <<locked>> | 92% | 54,302 psi | 90% | 2526 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 86% | 53,316 psi | 89% | 2589 fps | 99.4% |
| Alliant Power Pro 2000-MR | <<locked>> | 94% | 51,271 psi | 85% | 2612 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 98% | 52,156 psi | 87% | 2546 fps | 99.4% |
| Alliant Reloder-10x | <<locked>> | 86% | 53,867 psi | 89% | 2467 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 96% | 53,040 psi | 88% | 2559 fps | 98.5% |
| Alliant Reloder-17ᴾ | <<locked>> | 100% | 49,182 psi | 82% | 2585 fps | 98.8% |
| Baschieri & Pellagri 106 | <<locked>> | 84% | 52,808 psi | 88% | 2411 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 92% | 51,547 psi | 86% | 2536 fps | 97.8% |
| Bofors RP3 | <<locked>> | 98% | 52,344 psi | 87% | 2559 fps | 99.5% |
| Hodgdon Benchmark | <<locked>> | 90% | 54,346 psi | 90% | 2484 fps | 99.8% |
| Hodgdon BL-C2 | <<locked>> | 92% | 53,635 psi | 89% | 2569 fps | 99.9% |
| Hodgdon CFE223 | <<locked>> | 88% | 51,576 psi | 86% | 2595 fps | 98.4% |
| Hodgdon H322 | <<locked>> | 86% | 52,388 psi | 87% | 2500 fps | 100% |
| Hodgdon H335 | <<locked>> | 86% | 53,403 psi | 89% | 2523 fps | 100% |
| Hodgdon H380 | <<locked>> | 98% | 54,128 psi | 90% | 2562 fps | 97.5% |
| Hodgdon H4895 | <<locked>> | 92% | 53,011 psi | 88% | 2546 fps | 99.3% |
| Hodgdon Hybrid 100Vᴾ | <<locked>> | 100% | 39,552 psi | 66% | 2349 fps | 96.5% |
| Hodgdon LEVERevolution | <<locked>> | 96% | 54,143 psi | 90% | 2612 fps | 99.6% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 34,693 psi | 58% | 1496 fps | 100% |
| Hodgdon VARGET | <<locked>> | 94% | 54,041 psi | 90% | 2543 fps | 99.3% |
| IMR 3031 | <<locked>> | 92% | 51,503 psi | 86% | 2536 fps | 100% |
| IMR 4064 | <<locked>> | 96% | 52,750 psi | 88% | 2510 fps | 98.5% |
| IMR 4198 | <<locked>> | 86% | 54,070 psi | 90% | 2428 fps | 100% |
| IMR 4895 | <<locked>> | 96% | 54,360 psi | 90% | 2592 fps | 99.2% |
| IMR 8208 XBR | <<locked>> | 90% | 51,924 psi | 86% | 2493 fps | 99.5% |
| Lovex D073.5 | <<locked>> | 86% | 52,547 psi | 87% | 2490 fps | 99.9% |
| Lovex D073.6 | <<locked>> | 92% | 51,430 psi | 85% | 2520 fps | 100% |
| Lovex S060 | <<locked>> | 92% | 53,098 psi | 88% | 2470 fps | 98.9% |
| Lovex S062 | <<locked>> | 96% | 52,475 psi | 87% | 2513 fps | 99.6% |
| Norma 201 | <<locked>> | 92% | 51,880 psi | 86% | 2490 fps | 99.5% |
| Norma 202 | <<locked>> | 92% | 51,605 psi | 86% | 2497 fps | 100% |
| Norma 203B | <<locked>> | 96% | 52,170 psi | 87% | 2549 fps | 98.8% |
| Ramshot Big Game | <<locked>> | 96% | 52,011 psi | 86% | 2566 fps | 98.6% |
| Ramshot TAC | <<locked>> | 90% | 52,243 psi | 87% | 2497 fps | 96.5% |
| Ramshot Wild Boar | <<locked>> | 92% | 54,418 psi | 90% | 2566 fps | 99% |
| Ramshot X-Terminator | <<locked>> | 88% | 53,388 psi | 89% | 2497 fps | 98.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,099 psi | 58% | 1535 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 86% | 51,866 psi | 86% | 2487 fps | 99.9% |
| ReloadSwiss RS 52 | <<locked>> | 94% | 52,330 psi | 87% | 2615 fps | 98.5% |
| ReloadSwiss RS 60ᴾ | <<locked>> | 100% | 52,301 psi | 87% | 2648 fps | 100% |
| Rottweil R 901 | <<locked>> | 90% | 53,519 psi | 89% | 2484 fps | 100% |
| Rottweil R 902 | <<locked>> | 94% | 52,344 psi | 87% | 2487 fps | 99.5% |
| Rottweil R 903ᴾ | <<locked>> | 100% | 52,185 psi | 87% | 2546 fps | 99.3% |
| Shooters World Match Rifle | <<locked>> | 92% | 51,430 psi | 85% | 2520 fps | 100% |
| Shooters World Precision | <<locked>> | 96% | 52,475 psi | 87% | 2513 fps | 99.6% |
| Shooters World Tactical Rifle | <<locked>> | 84% | 51,924 psi | 86% | 2457 fps | 99.3% |
| SNPE Vectan SP 10 | <<locked>> | 84% | 54,418 psi | 90% | 2530 fps | 100% |
| SNPE Vectan SP 11ᴾ | <<locked>> | 100% | 53,272 psi | 89% | 2592 fps | 98.9% |
| SNPE Vectan SP 3 | <<locked>> | 86% | 54,302 psi | 90% | 2480 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 92% | 53,867 psi | 89% | 2526 fps | 97.3% |
| SNPE Vectan SP 9 | <<locked>> | 94% | 53,983 psi | 90% | 2549 fps | 99% |
| SNPE Vectan Tubal 3000 | <<locked>> | 92% | 53,853 psi | 89% | 2444 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 98% | 52,533 psi | 87% | 2434 fps | 100% |
| Somchem S321 | <<locked>> | 88% | 52,968 psi | 88% | 2530 fps | 99.7% |
| Somchem S335 | <<locked>> | 92% | 52,968 psi | 88% | 2448 fps | 100% |
| Somchem S341 | <<locked>> | 92% | 52,779 psi | 88% | 2520 fps | 98.7% |
| Somchem S355ᴾ | <<locked>> | 100% | 52,837 psi | 88% | 2546 fps | 99.2% |
| Somchem S365ᴾ | <<locked>> | 100% | 38,508 psi | 64% | 2395 fps | 97.8% |
| Vihtavuori N130 | <<locked>> | 88% | 53,635 psi | 89% | 2418 fps | 100% |
| Vihtavuori N133 | <<locked>> | 92% | 53,432 psi | 89% | 2434 fps | 100% |
| Vihtavuori N135 | <<locked>> | 96% | 53,476 psi | 89% | 2503 fps | 100% |
| Vihtavuori N140 | <<locked>> | 94% | 51,851 psi | 86% | 2477 fps | 100% |
| Vihtavuori N150ᴾ | <<locked>> | 100% | 50,966 psi | 85% | 2487 fps | 99.7% |
| Vihtavuori N160ᴾ | <<locked>> | 100% | 44,991 psi | 75% | 2438 fps | 95.9% |
| Vihtavuori N530 | <<locked>> | 90% | 52,330 psi | 87% | 2493 fps | 99.5% |
| Vihtavuori N540 | <<locked>> | 96% | 53,200 psi | 88% | 2516 fps | 100% |
| Winchester 6.5 StaBALLᴾ | <<locked>> | 100% | 46,253 psi | 77% | 2428 fps | 98.1% |
| Winchester 748 | <<locked>> | 92% | 54,143 psi | 90% | 2579 fps | 100% |
| Winchester StaBALL Match | <<locked>> | 94% | 53,084 psi | 88% | 2556 fps | 99.3% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 40,466 psi | 67% | 2267 fps | 100% |
| Accurate 2200 | <<locked>> | 80% | 50,662 psi | 84% | 2487 fps | 97.9% |
| Accurate 2460 | <<locked>> | 80% | 43,714 psi | 73% | 2352 fps | 99.7% |
| Accurate 2495 | <<locked>> | 80% | 34,084 psi | 57% | 2205 fps | 99.9% |
| Accurate 2520 | <<locked>> | 80% | 38,754 psi | 64% | 2306 fps | 98.9% |
| Accurate 4064 | <<locked>> | 80% | 32,184 psi | 53% | 2185 fps | 98.4% |
| Accurate LT-30 | <<locked>> | 80% | 48,167 psi | 80% | 2333 fps | 100% |
| Accurate LT-32 | <<locked>> | 80% | 48,472 psi | 81% | 2346 fps | 99.9% |
| ADI AR 2206H | <<locked>> | 80% | 36,912 psi | 61% | 2260 fps | 95.5% |
| ADI AR 2208 | <<locked>> | 88% | 39,827 psi | 66% | 2303 fps | 95.5% |
| ADI AR 2219 | <<locked>> | 80% | 47,413 psi | 79% | 2431 fps | 100% |
| ADI Benchmark 8208 | <<locked>> | 80% | 38,609 psi | 64% | 2270 fps | 97.4% |
| Alliant AR-Comp | <<locked>> | 80% | 37,318 psi | 62% | 2287 fps | 100% |
| Alliant Power Pro 1200-R | <<locked>> | 80% | 44,135 psi | 73% | 2441 fps | 98.1% |
| Alliant Power Pro 2000-MR | 40.7 gr | 88% | 42,496 psi | 71% | 2454 fps | 95.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 82% | 32,503 psi | 54% | 2192 fps | 95.2% |
| Alliant Reloder-10x | <<locked>> | 80% | 45,527 psi | 76% | 2352 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 84% | 37,347 psi | 62% | 2290 fps | 95% |
| Alliant Reloder-17 | <<locked>> | 90% | 36,216 psi | 60% | 2336 fps | 95.2% |
| Baschieri & Pellagri 106 | <<locked>> | 80% | 46,659 psi | 78% | 2329 fps | 100% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 40,379 psi | 67% | 2349 fps | 95.2% |
| Bofors RP3 | <<locked>> | 82% | 32,082 psi | 53% | 2198 fps | 95.1% |
| Hodgdon Benchmark | <<locked>> | 80% | 40,872 psi | 68% | 2274 fps | 98.4% |
| Hodgdon BL-C2 | <<locked>> | 80% | 36,637 psi | 61% | 2290 fps | 97.5% |
| Hodgdon CFE223 | 37.9 gr | 80% | 39,900 psi | 66% | 2392 fps | 95.7% |
| Hodgdon H322 | <<locked>> | 80% | 43,598 psi | 72% | 2372 fps | 100% |
| Hodgdon H335 | <<locked>> | 80% | 44,106 psi | 73% | 2388 fps | 99.8% |
| Hodgdon H380 | <<locked>> | 92% | 44,875 psi | 75% | 2421 fps | 95.6% |
| Hodgdon H4895 | <<locked>> | 80% | 37,072 psi | 62% | 2270 fps | 96.3% |
| Hodgdon Hybrid 100V | <<locked>> | 96% | 35,331 psi | 59% | 2260 fps | 95% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 33,272 psi | 55% | 2234 fps | 95.3% |
| Hodgdon TrailBoss | <<locked>> | 80% | 25,991 psi | 43% | 1339 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 35,636 psi | 59% | 2228 fps | 95.7% |
| IMR 3031 | <<locked>> | 80% | 35,853 psi | 60% | 2283 fps | 99.8% |
| IMR 4064 | <<locked>> | 84% | 37,231 psi | 62% | 2244 fps | 95% |
| IMR 4198 | <<locked>> | 80% | 45,890 psi | 76% | 2320 fps | 100% |
| IMR 4895 | <<locked>> | 82% | 35,839 psi | 60% | 2274 fps | 95.3% |
| IMR 8208 XBR | <<locked>> | 80% | 38,609 psi | 64% | 2270 fps | 97.4% |
| Lovex D073.5 | <<locked>> | 80% | 43,468 psi | 72% | 2356 fps | 99.1% |
| Lovex D073.6 | <<locked>> | 80% | 35,346 psi | 59% | 2251 fps | 98.2% |
| Lovex S060 | <<locked>> | 80% | 37,840 psi | 63% | 2211 fps | 95.8% |
| Lovex S062 | <<locked>> | 80% | 33,170 psi | 55% | 2172 fps | 95.9% |
| Norma 201 | <<locked>> | 80% | 36,796 psi | 61% | 2234 fps | 97% |
| Norma 202 | <<locked>> | 80% | 36,347 psi | 60% | 2244 fps | 98.9% |
| Norma 203B | <<locked>> | 84% | 36,724 psi | 61% | 2283 fps | 95.5% |
| Ramshot Big Game | <<locked>> | 86% | 38,348 psi | 64% | 2333 fps | 95.6% |
| Ramshot TAC | <<locked>> | 86% | 46,441 psi | 77% | 2408 fps | 95.2% |
| Ramshot Wild Boar | <<locked>> | 80% | 37,376 psi | 62% | 2283 fps | 95.6% |
| Ramshot X-Terminator | <<locked>> | 80% | 41,901 psi | 70% | 2313 fps | 96.7% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,179 psi | 43% | 1368 fps | 100% |
| ReloadSwiss RS 40 | <<locked>> | 80% | 43,120 psi | 72% | 2352 fps | 99.3% |
| ReloadSwiss RS 52 | 37.7 gr | 84% | 38,247 psi | 64% | 2369 fps | 95.2% |
| ReloadSwiss RS 60 | <<locked>> | 82% | 30,501 psi | 51% | 2201 fps | 95.5% |
| Rottweil R 901 | <<locked>> | 80% | 40,756 psi | 68% | 2283 fps | 99.4% |
| Rottweil R 902 | <<locked>> | 80% | 35,143 psi | 58% | 2192 fps | 96.5% |
| Rottweil R 903 | <<locked>> | 86% | 34,098 psi | 57% | 2234 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 35,346 psi | 59% | 2251 fps | 98.2% |
| Shooters World Precision | <<locked>> | 80% | 33,170 psi | 55% | 2172 fps | 95.9% |
| Shooters World Tactical Rifle | <<locked>> | 80% | 45,527 psi | 76% | 2359 fps | 98.4% |
| SNPE Vectan SP 10 | <<locked>> | 80% | 47,892 psi | 80% | 2438 fps | 100% |
| SNPE Vectan SP 11 | <<locked>> | 88% | 37,463 psi | 62% | 2320 fps | 95.4% |
| SNPE Vectan SP 3 | <<locked>> | 80% | 45,774 psi | 76% | 2362 fps | 100% |
| SNPE Vectan SP 7 | <<locked>> | 86% | 44,454 psi | 74% | 2382 fps | 95.3% |
| SNPE Vectan SP 9 | <<locked>> | 82% | 37,637 psi | 63% | 2277 fps | 95.7% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 38,276 psi | 64% | 2205 fps | 99.2% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 31,401 psi | 52% | 2087 fps | 98.6% |
| Somchem S321 | <<locked>> | 80% | 41,336 psi | 69% | 2346 fps | 98.3% |
| Somchem S335 | <<locked>> | 80% | 37,797 psi | 63% | 2211 fps | 99.6% |
| Somchem S341 | <<locked>> | 80% | 36,201 psi | 60% | 2241 fps | 95.1% |
| Somchem S355 | <<locked>> | 86% | 35,172 psi | 58% | 2241 fps | 95.6% |
| Somchem S365 | <<locked>> | 94% | 32,503 psi | 54% | 2257 fps | 95.6% |
| Vihtavuori N130 | <<locked>> | 80% | 43,105 psi | 72% | 2274 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 38,029 psi | 63% | 2205 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 33,576 psi | 56% | 2192 fps | 99.9% |
| Vihtavuori N140 | <<locked>> | 80% | 34,374 psi | 57% | 2188 fps | 98.8% |
| Vihtavuori N150 | <<locked>> | 82% | 29,718 psi | 49% | 2103 fps | 95.1% |
| Vihtavuori N160 | <<locked>> | 98% | 42,641 psi | 71% | 2395 fps | 95.3% |
| Vihtavuori N530 | <<locked>> | 80% | 38,551 psi | 64% | 2267 fps | 97.5% |
| Vihtavuori N540 | <<locked>> | 80% | 33,025 psi | 55% | 2178 fps | 98.1% |
| Winchester 6.5 StaBALL | <<locked>> | 92% | 36,463 psi | 61% | 2247 fps | 95.4% |
| Winchester 748 | <<locked>> | 80% | 37,318 psi | 62% | 2306 fps | 98% |
| Winchester StaBALL Match | <<locked>> | 80% | 34,374 psi | 57% | 2231 fps | 95.4% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 82 powders for .308 Win. Ackley Improved loaded with the .308 | 180gr | Barnes X BT. ReloadSwiss RS 60 delivers the highest muzzle velocity at 2,648 fps; across all powders the maximum-charge window runs from 1,496 fps to 2,648 fps. Alliant Reloder-17 gives the best case fill at 100 %, and 82 of the 82 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (415 MPa), the top charges use 58–90 %, leaving at least 10 % headroom. The 180.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Alliant Reloder-17, Hodgdon Hybrid 100V, Hodgdon TrailBoss reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. ReloadSwiss RS 52, Alliant Power Pro 2000-MR, Hodgdon CFE223 rank at the top here: for .308 Win. Ackley Improved with the .308 | 180gr | Barnes X BT they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.